The military-industrial scientific research system of the academic master.

Logically speaking, as one of the main persons in charge, it would be unreasonable for an outsider to intervene in his own project like this, and the idea of ​​building two versions of the prototype sounds a bit crazy at first glance.

However, as Chang Haonan just said, the first version of the design can actually verify the overall aircraft and most of the subsystems. The second version only needs to check for deficiencies and fill them in, and it will not cause too much waste. The final design If the full version of the aircraft can really achieve active stability control as Chang Haonan said, the benefits will be huge...

Yang Wei admitted that he was a little tempted.

Seeing him bowing his head in thought, Chang Haonan knew clearly that this was a sign of a person in tangle.

Therefore, he added a heavy chip to the opponent's inner balance.

"As for the second version of the design of Project 10, I actually had contact with the comrades from Guizhou Airlines once at the beginning of this year."

Sure enough, topics related to the project quickly aroused Yang Wei's interest. He raised his head and looked at Chang Haonan with some confusion.

Guihang is a brother unit supported by the 611 Research Institute and the 132 Factory in Chengdu, so he is naturally familiar with it, but so far it has only been able to produce some two-seater JJ-7s, both in terms of design and production capacity. , none of them have the possibility to participate in Project No. .

"At that time, they wanted to develop a new generation of advanced trainer aircraft based on the JJ-7. I gave them some support in terms of overall plans and simulation technology. If nothing else happens, after the basic design is come out, I will prepare this This project is an attempt to apply the DSI air intake."

After entering the 90s, the aviation industry painfully reflected on the experiences and lessons of the previous to years and concluded a set of relatively low-cost and low-risk technology verification models.

Except for particularly critical and special technologies like digital telex, which require a specially built J-8IIACT for verification, most new technologies can be verified in the development process of existing models in small steps to share risks. .

In the previous life, due to a series of technical development and organizational management reasons, this principle was not well implemented.

There is no way, there are too few projects, and the development progress is slow, so we can only seek to complete the success in one battle.

For example, the J-10 has no choice but to intensively apply more than 60% of new technologies, which is actually quite risky.

But now, due to the role played by Chang Haonan, the August 3rd Project was successfully finalized, and more importantly, the development of aviation technology was streamlined, allowing this principle to finally be carried forward.

Including the J-10, which has just completed final assembly but has not yet made its first flight, subsystems and technologies such as radar, power supply, and integrated front windshield have all been verified in advance on the J-8C.

Therefore, although the emergence of Chang Haonan has greatly accelerated the development of Huaxia technology, especially aviation technology, this not only did not lead to an unstable foundation, but also reduced the risks of many projects on this timeline.

Chang Haonan is now talking about applying DSI air intake technology on an advanced trainer aircraft that has no difficulty in development. Obviously, he is preparing for the second version of the No. 10 Project design.

"DSI air intake..."

This term made Yang Wei stunned for a moment, and then he reacted:

"Oh, you're talking about the convex hull inlet, right?"

In the early 90s, it was even difficult for China to systematically track the cutting-edge international aviation technology, so it lacked a unified idiomatic translation for these new terms.

Chang Haonan nodded:

"Yes, these two translations mean the same thing."

"This has been a highly discussed design in the past two years, and research in the United States has just begun. Previously, an F16 was specially modified to verify this thing."

Although no relevant projects have been launched in China at this time, it is naturally impossible for people like Yang Wei to turn a blind eye to this:

"It is said that the JSF, another fourth-generation aircraft they are currently developing, plans to apply this technology. Are you... sure that you can be ahead of the Americans? And if the improved version of the JJ-7 has air intake in the nose, you How are you going to install the convex hull, uh, the DSI air intake?"

"Of course it's not the nose air intake. When I communicated with the comrades from the 648 Institute before, the overall plan has been changed to a dual-inlet design in the subcostal part."

Seeing that the other party had shown strong interest, Chang Haonan shook his head and continued to explain:

“The DSI air inlet utilizes the waveriding principle and the characteristics of the conical flow itself to blow out the boundary layer of the fuselage by relying on the pressure gradient on the compressed curved surface. This eliminates the need for boundary layer partitions, relief systems, and bypass systems. Several parts are lighter than ordinary air intakes and have a smaller radar reflection area. As long as they are designed properly, the performance will definitely be greatly improved."

"The only problem is that this kind of air inlet is completely fixed, so the optimization range is relatively narrow. However, considering that the aviation force does not need Project 0.7 to undertake any high-altitude and high-speed interception missions, it only needs to choose the transonic speed of Mach 1.5-. Just optimize the speed section..."

This is another benefit brought by the smooth finalization and service of the J-8C.

The J-10 does not need to do everything, it only needs to be responsible for the parts that a normal third-generation aircraft is best at.

"However, just analyzing this kind of thing on paper is not very convincing. After all, Project 16 is a new advanced training aircraft project. I plan to use it as China's FICON to meet the training needs of the aviation force. , it can also be regarded as a technical verification for the subsequent improvement design of Project No. .”

Historically, the verification of the DSI air inlet was originally completed on the Xiaolong, but at present, the Pakistan Air Force seems to be very satisfied with the J-7F, and it is likely to have some impact on the advancement of the subsequent Xiaolong project.

And even if everything goes well, it will take 1998 for the two countries to complete the debate on technical and tactical indicators and finally transfer the project to the development stage.

In any case, Chang Haonan couldn't afford to wait for a year, so he had to use his subjective initiative and launch a project to verify it.

Hearing this, Yang Wei, who was sitting opposite, finally realized -

Oh, no wonder Ni Xiaozi just said that he wanted to make a major change. The co-author even helped us choose the form of the air intake for the second version of the design...

You figured it all out, right?

After all, I am Party A and you are Party A?

However, although there was a suspicion of cheating, Party B, who was originally only invited to assist in the structural and aerodynamic analysis before the first flight, actually sent two such gift packages, and both of them were the J-10 as a medium-sized single-engine fighter. Much needed parts - reliability upgrades, engine envelope expansion and weight reduction.

It’s really hard to refuse.

After a battle between heaven and man, he decided to temporarily forget his dignity as Party A.

"Okay, what do we need to do on the 611? I mean, about everything you just said, active stability control, and the DSI air intake."

Yang Wei pressed out the tip of the ballpoint pen again and opened the notebook.

"Step by step, the DSI air intake can be done a little later."

Regarding the follow-up plan, Chang Haonan has already prepared the draft:

"Both the instability prediction system and the stability management system require a large amount of data support, and I plan to complete the relevant algorithm and control rate design in one to two months. It is impossible to always run both ends, so now I need you to send Several people familiar with the overall design of Project 10, especially the flying hair matching design, came to assist me."

"for how long?"

Even though Yang Wei thought he was used to the outrageous behavior of the guy in front of him, what he heard in his ears still made him feel a little unbelievable.

"One to two months."

Chang Haonan was already used to dealing with this kind of scene when he was working at the August 3rd Project:

"In this way, without delaying your progress, this system can be integrated into the flight control before the engine ground test begins."

The reason why Chang Haonan was in such a hurry was because as a reborn person, he knew through later declassified information that the reason why it took more than a year for the No. 10 prototype of the J-01 to fly for the first time was not mainly because of the rumors. Guangzhou's three drops of oil (the inspection after the discovery of the three drops of oil only took about ten days), but due to two blade damage problems occurred during the ground test, which took a lot of man-hours to repair, and finally adjusted the air intake Some details were passed.

If this situation can be avoided, the first flight of the J-10 can actually be advanced to the second half of 97.

Of course, he can also go to the 611 Institute and find ways to perfect the relevant designs in advance.

But doing so also takes a lot of time.

In contrast, it is better to develop this active stability control system in advance to avoid those two blade damages.

In this way, not much time is wasted, and the designers of the 611 Institute can find and solve the problem by themselves.

After all, there are some things in the engineering field that you can only appreciate if you miss them.

And today, Chang Haonan no longer needs to provide himself with enough prestige through several successful problem analyzes and improved designs as he did when he first joined the 83 Project.

Putting your name there is enough.

For example, today, he just made a PPT, combined with a simple description, which was enough for the 611 Office to take his suggestions into consideration.

……

Yang Wei certainly doesn't know what will happen to the J-10 in future tests, but he knows very well that the system developed by Chang Haonan can provide huge fault tolerance.

In the worst-case scenario, it might even give the entire project a chance to come back to life.

For this reason, it won’t hurt even if the testing progress is delayed for a few months.

But now, the other party actually said that there was no need to waste time at all...

"How about this."

Once something like really fragrant happens for the first time, there won't be any psychological burden the second time, so Yang Wei quickly made a decision,

"Of course, the one who is most familiar with the overall design of Project No. 10 is Mr. Song, but he has to stay in Rongcheng and be responsible for catching the boss. The next one is me."

"How about I stay here and be your deputy?"

It's all for Project No. 10, Party A and Party B, so narrow-minded!